Lillia is a distinctive girls' name in United States, ranking #3014 in 2025 with 55 recorded births. The name reached its all-time peak in 2013 with 73 births ranking #2473. Since 1996, the popularity has increased by 129.2%. In 2025, approximately 1 in every 29,223 girls born was named Lillia. STABLE Recent data shows the name is currently stable.